Technically, this is not accurate. But it is a fair encapsulation of Schwan's overall position. Not even Herman Schwan had the chutzpah to explicitly maintain that he knew that it was impossible that there could exist a physical process that he didn't know anything about. That's why the statement is technically incorrect. But, after conceding this limitation on his knowledge, Schwan's writings are pregnant with the notion that the reader should ignore this consideration and reach the conclusion that EMF bioeffects are impossible because they are impossible as a consequence of the two processes he recognized. Thus, when confronted with effects that didn't fit within the purview of his two processes, he simply denied the data. Why? Because he knew the data could not come about as a result of the two processes that he accepted.